San Diego  A woman who lives in Mexico appears to have been the unsuspecting target of drug traffickers who stuck marijuana packages to the underside of her car Friday, San Diego police said.

The 33-year-old woman left her home and crossed the border about 3 a.m. in her vehicle. She arrived to work in downtown San Diego and was sitting inside the vehicle at 4 a.m. when she was confronted by two men who began retrieving items from underneath her vehicle, said police Lt. Kevin Mayer.

She startled the men, who ran to a black sedan, dropping some marijuana on the way, police said.

Six packages, containing about 30 pounds of marijuana, were found secured with magnets to the undercarriage of the vehicle, Mayer said. Investigators said it appears the woman unknowingly drove the drugs across the border, and no arrests have been made.

It was unknown if the men escaped with any drugs.

Drivers are encouraged to check under their vehicles before crossing the border.